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Efficient dynamic hydrate inhibitor

A hydrate inhibitor and kinetic technology, applied in the preparation of organic compounds, drilling compositions, organic chemistry, etc., can solve the problems of high cost, high toxicity, difficult recovery, etc., and achieve low pollution and reduced exposure Effect of Chance, Inhibition Time, and Effect Boost

Inactive Publication Date: 2009-12-16
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a high-efficiency kinetic hydrate with low dosage, good effect and economical feasibility, aiming at the defects of large dosage, high cost, difficult recovery and high toxicity of existing traditional hydrate inhibitors. Inhibitor and its synthesis method

Method used

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  • Efficient dynamic hydrate inhibitor
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0038] In the absence of inhibitor in the aqueous solution, the THF experiment was carried out, and the experimental results are shown in Table 1.

example 2～4

[0040] The aqueous solutions of hexapolyglycerol cyclohexyl maleamide monoester with concentrations of 0.01%, 0.5% and 1% were respectively prepared, and the THF experiment was carried out. The test results are shown in Table 1.

example 5～7

[0042] The aqueous solutions of tripolyglycerol isopropyl maleamide diester with concentrations of 0.01%, 0.5% and 1% were prepared respectively, and the THF experiment was carried out. The test results are shown in Table 1.

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Abstract

The invention provides an efficient dynamic hydrate inhibitor which is a synthetic polyglycerol amide ester compound comprising the materials of glycerine, maleic anhydride and N-substituent amine; compared with the using concentration of water, the mass concentration of polyglycerol amide ester is 0.01-5wt%; the mole ratio of the maleic anhydride and N-substituent amine is 1-1.3:1; the mole ratio of the intermediate product obtained from the reaction of glycerine, maleic anhydride and N-substituent amine is n:1-n+2. The compound has a unique unit structure which can restrain hydrate growth or disperse hydrate particles to avoid gathering, thus restricting the growth of the hydrate through good adsorption. Compared with traditional thermodynamics inhibitor, the invention has the advantages of low usage, little pollution, better restraining time and effect; compared with efficient dynamic inhibitor of PVP, the invention has the advantages of low price, simple synthetic process and the like.

Description

technical field [0001] The invention relates to a petrochemical technology field for preventing, limiting or reducing the generation of hydrate, in particular to a high-efficiency kinetic hydrate inhibitor and a synthesis method thereof. Background technique [0002] Natural gas hydrates are ice-snow-like crystals formed by natural gas and liquid water at a certain temperature and pressure during the extraction, processing and transportation of oil and natural gas. In the process of pipeline oil and gas transportation, because many times contain water, it is easy to generate hydrate under certain conditions, which will cause many harm to the oil and gas industry. For example, in the process of natural gas transportation and processing, especially the output When the gas contains saturated water vapor, it is easy to block pipes, valves and processing equipment in cold weather. Natural gas can form hydrates in pipelines, wells and porous media of formations, which is very har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/52C07C235/76C07C231/02
Inventor 柏子龙王学珍马宏燎黄小波邢爱玲
Owner EAST CHINA UNIV OF SCI & TECH